Rear diff. failure @ 36k mi - Jeep Garage - Jeep Forum

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  #1  
Old 05-03-2016, 12:57 PM
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Rear diff. failure @ 36k mi

2014 V6 Latitude
36k miles

Symptoms:
-intermittent mechanical noise while rolling
-frequency of noise independent of vehicle speed or engine speed
-much wheel slippage from a standing start
-could induce noise by applying heavy throttle input

Solution:
-replaced rear differential
-replaced left rear half-axle




No other issues with vehicle

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  #2  
Old 05-03-2016, 07:00 PM
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Re: Rear diff. failure @ 36k mi

Quote:
Originally Posted by chR1s View Post
V6 Latitude
36k miles

Symptoms:
-intermittent mechanical noise while rolling
-frequency of noise independent of vehicle speed or engine speed
-much wheel slippage from a standing start
-could induce noise by applying heavy throttle input

Solution:
-replaced rear differential
-replaced left rear half-axle

No other issues with vehicle
In November 2013 we took delivery of our 2014 Limited but it was garaged immediately as we were in Florida. In January we drove it to Florida and started getting a notice that it overheated and we could not engage 4WD. It took some time before FCA identified the problem but when we returned from Florida in April 2014 they replaced the differential and the left rear half axle.

What year is your unit and when was it built?

GR
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Old 05-04-2016, 12:29 PM
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Re: Rear diff. failure @ 36k mi

Quote:
Originally Posted by grandriver125 View Post
In November 2013 we took delivery of our 2014 Limited but it was garaged immediately as we were in Florida. In January we drove it to Florida and started getting a notice that it overheated and we could not engage 4WD. It took some time before FCA identified the problem but when we returned from Florida in April 2014 they replaced the differential and the left rear half axle.

What year is your unit and when was it built?

GR
2014. I'll have to look up the BOD.

Interesting to hear of the same failure.
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Old 05-04-2016, 01:16 PM
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Re: Rear diff. failure @ 36k mi

Quote:
Originally Posted by chR1s View Post
2014. I'll have to look up the BOD.

Interesting to hear of the same failure.
Here is the original thread on this issue.

GR

EVIC message - 4WD not available transmission overheated
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  #5  
Old 05-24-2016, 05:43 PM
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Re: Rear diff. failure @ 36k mi

After 33K miles I have put in 20 oz of gear oil.
All I have is left axle weep, no leaks.
If you do not have oil in the RDU it will fail.
We need to address this issue!
2014 Jeep Cherokee TH build date 1/4/2014.
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  #6  
Old 06-16-2016, 02:50 AM
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Re: Rear diff. failure @ 36k mi

Quote:
Originally Posted by xmmtoad View Post
After 33K miles I have put in 20 oz of gear oil.
All I have is left axle weep, no leaks.
If you do not have oil in the RDU it will fail.
We need to address this issue!
2014 Jeep Cherokee TH build date 1/4/2014.
What type of gear oil did you use? The rdm's take a special type of oil, anything else will end up ruining it.
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Old 06-16-2016, 06:40 AM
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Re: Rear diff. failure @ 36k mi

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Originally Posted by loveracing1988 View Post
What type of gear oil did you use? The rdm's take a special type of oil, anything else will end up ruining it.
I am using the correct gear oil which is AAM Fluid 70W-80 meeting MS-2155 part number 68227765AA. I have not been able to find a different manufacturer. AAM is American Axle Manufacturing.
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Old 06-16-2016, 07:48 AM
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Re: Rear diff. failure @ 36k mi

Quote:
Originally Posted by xmmtoad View Post
I am using the correct gear oil which is AAM Fluid 70W-80 meeting MS-2155 part number 68227765AA. I have not been able to find a different manufacturer. AAM is American Axle Manufacturing.
You won't find another manufacturer. It is made special for those axles.
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  #9  
Old 06-28-2016, 06:35 AM
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Re: Rear diff. failure @ 36k mi

Quote:
Originally Posted by xmmtoad View Post
After 33K miles I have put in 20 oz of gear oil.
All I have is left axle weep, no leaks.
If you do not have oil in the RDU it will fail.
We need to address this issue!
2014 Jeep Cherokee TH build date 1/4/2014.
Just a comment:
At 33K miles your power train is still under warranty. Basically the fluids are fluids for life and thus sealed units.
An axle should never need fluid unless there is a leak. A leak is the only way you will lose fluid, period.

In the old days I did have to check axle levels and transmission fluid levels on every oil change. These days you do not. In fact it is not advisable unless you see evidence of a leak.
In fact by just checking them you run the risk of introducing contaminants into the fluid and that would not be good. Overfilling is another risk.
In fact overfilling can cause over pressure and actually damage your RDU seals.

If you do not have oil/lube in the axle (RDU) or its low you have a leak.
If you have weep its very possibly you have a leak. You should not have weeping. A RDU does not use oil. the oil/lube may eventually wear out but does not evaporate as the unit is sealed.

I would not be buying/adding fluid as these are sealed units and are under warranty for at least 5 years and xxx miles.
The dealer needs to address the issue why you are losing fluid.
Adding that much fluid over time indicates a leak in the seals of the RDU.
Basically unless I saw evidence of a leak I would have absolutely no reason to even want to check the fluid level on a sealed unit.

Get it into the dealer pronto.
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  #10  
Old 06-28-2016, 06:51 AM
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Re: Rear diff. failure @ 36k mi

I agree 100%. My dealer was actually ready to replace the 2 left rear axle seals. It seemed to be a major repair. My fear was they would create more problems. If I insisted they would probably replace the seals. Adding a little oil once a year is easy to do. I will consider your advice.
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